全文获取类型
收费全文 | 8120篇 |
免费 | 433篇 |
国内免费 | 42篇 |
专业分类
耳鼻咽喉 | 150篇 |
儿科学 | 477篇 |
妇产科学 | 140篇 |
基础医学 | 905篇 |
口腔科学 | 223篇 |
临床医学 | 576篇 |
内科学 | 2037篇 |
皮肤病学 | 183篇 |
神经病学 | 514篇 |
特种医学 | 292篇 |
外科学 | 1156篇 |
综合类 | 185篇 |
一般理论 | 1篇 |
预防医学 | 284篇 |
眼科学 | 348篇 |
药学 | 567篇 |
中国医学 | 36篇 |
肿瘤学 | 521篇 |
出版年
2023年 | 87篇 |
2022年 | 193篇 |
2021年 | 337篇 |
2020年 | 206篇 |
2019年 | 272篇 |
2018年 | 343篇 |
2017年 | 209篇 |
2016年 | 321篇 |
2015年 | 274篇 |
2014年 | 380篇 |
2013年 | 460篇 |
2012年 | 628篇 |
2011年 | 664篇 |
2010年 | 379篇 |
2009年 | 320篇 |
2008年 | 501篇 |
2007年 | 499篇 |
2006年 | 431篇 |
2005年 | 392篇 |
2004年 | 345篇 |
2003年 | 299篇 |
2002年 | 244篇 |
2001年 | 107篇 |
2000年 | 73篇 |
1999年 | 59篇 |
1998年 | 38篇 |
1997年 | 35篇 |
1996年 | 27篇 |
1995年 | 37篇 |
1994年 | 20篇 |
1993年 | 14篇 |
1992年 | 27篇 |
1991年 | 37篇 |
1990年 | 23篇 |
1989年 | 23篇 |
1988年 | 29篇 |
1987年 | 26篇 |
1986年 | 17篇 |
1985年 | 17篇 |
1984年 | 12篇 |
1983年 | 13篇 |
1982年 | 9篇 |
1980年 | 13篇 |
1979年 | 11篇 |
1977年 | 14篇 |
1976年 | 13篇 |
1975年 | 16篇 |
1974年 | 11篇 |
1972年 | 9篇 |
1971年 | 13篇 |
排序方式: 共有8595条查询结果,搜索用时 15 毫秒
1.
Indian Journal of Pediatrics - 相似文献
2.
Background
Despite significant pain relief following total hip arthroplasty (THA) in patients with ankylosing spondylitis, a small subset of patients presenting with extra-articular extension contracture of hips remains unsatisfied.Methods
We retrospectively evaluated the patients with ankylosing spondylitis who underwent simultaneous bilateral THA and had extensor tightness of both hips preoperatively. They were managed with modified Z-plasty of iliotibial band. Patients with windswept deformity, commonly seen in bilateral hip arthritis caused by ankylosing spondylitis, were excluded.Results
Between July 2011 and June 2015, out of 148 patients with bilateral hip involvement, 10 patients (20 hips) had extension contracture of both hips that was addressed during surgery. All patients were followed up for a minimum of 2 years. They could sit comfortably on a chair of height 18 inches with hips and knees flexed to at least 90°. The mean postoperative sum range of motion was 144.6° with an average hip flexion of 95° (range, 90°-105°). None of them had recurrence of extension contracture. There was significant improvement in range of motion and hence ambulation and function. No radiolucent lines exceeding 2 mm were seen in any of the zones around either of the components as evaluated in latest X-rays.Conclusion
Extension contracture of hip although rare is a noticeable problem and needs to be addressed during THA. Modified Z-plasty technique of iliotibial band is a reliable method in managing these patients. 相似文献3.
4.
Nand L. Sharma Vikram K. Mahajan Neelam Gupta Nitin Ranjan and Anju Lath 《Journal of cutaneous pathology》2009,36(4):486-492
Ehlers-Danlos syndrome – vascular type, the only lethal form, is rarely reported in dermatology literature. It is characterized by translucent, atrophic skin, easy bruising, arterial, intestinal and/or uterine fragility manifesting as varicose veins, aneurysms and vascular/visceral/uterine rupture. As its dermatopathologic features are not well elucidated, diagnosis is often made after a catastrophic complication or at autopsy. This 36 year-old non-consanguineous male had brown-black plaques with atrophy and frequent ulceration over legs and dorsal feet and tortuous varicose veins around ankles for the past 15 years. Perivenous skin was translucent and hypopigmented. He had multiple and ecchymotic keloids and small atrophic, pityriasis versicolor-like lesions over trunk. He did not have hypermobile/hyperextensible skin and joints and showed no systemic or investigative abnormality. Histopathologic features of atrophic lesion included blood extravasation in atrophic epidermis/dermis, focal clustering and dilatation of blood vessels, malformed vessel walls, abundant hemosiderin in the dermis and homogenously stained/whorled patterned collagen especially around blood vessels. Pathology of keloidal lesion showed new collagen and vascular fragility. These histopathologic features appear of diagnostic value especially in patients who have compatible clinical findings but cannot afford confirmation by biochemical testing for abnormal synthesis of type III procollagen or identification of mutations in the COL3A1 gene. 相似文献
5.
Guntur E Luis Chee-Khuen Yong Deepak A Singh S Sengupta David SK Choon 《Journal of orthopaedic surgery and research》2007,2(1):22-10
Background
Acromioclavicular injuries are common in sports medicine. Surgical intervention is generally advocated for chronic instability of Rockwood grade III and more severe injuries. Various methods of coracoclavicular ligament reconstruction and augmentation have been described. The objective of this study is to compare the biomechanical properties of a novel palmaris-longus tendon reconstruction with those of the native AC+CC ligaments, the modified Weaver-Dunn reconstruction, the ACJ capsuloligamentous complex repair, screw and clavicle hook plate augmentation. 相似文献6.
A rare case of a maxillo-mandibular band in a 21 year female patient is reported. Possibility of its being a remnant of buccaphary geal membrane is discussed in the light of clinical and histological findings. 相似文献
7.
Deepak N Amarapurkar Nikhil D Patel Jignesh Jatania 《Indian journal of gastroenterology》2007,26(3):113-117
INTRODUCTION: The prevalence and clinical spectrum of mesenteric venous thrombosis (MVT) in India is largely unknown. METHODS: We retrospectively re-viewed the case records of patients with primary mesenteric venous thrombosis seen over a 10-year period and retrieved information on clinical picture, underlying hypercoagulable states and outcome. RESULTS: The 28 cases (mean age 41.2 [SD 10.2] years; 19 male) included 13 with acute MVT, 10 with subacute MVT and 5 with chronic MVT. Ten patients had past thromboembolic events (multiple events in five); four patients had isolated superior mesenteric vein involvement and 14 had multiple vessel involvement. Hypercoagulable state was identified in 17 patients, with multiple etiologies in 7 patients. Pre-operative diagnosis was made in all patients. Ten patients needed surgical management; the rest were managed medically initially, but 2 required surgery on follow up. Seven patients died during a follow up of up to 10 years, with in-hospital mortality during index admission in six. CONCLUSIONS: Most of the patients with MVT have multiple intra-abdominal vessel involvement and underlying hypercoagulable state. The policy of early treatment with anticoagulation in all and surgical treatment as per need, achieves low mortality. 相似文献
8.
9.
Pratipal Singh Vivek Vijjan Manu Gupta Deepak Dubey Aneesh Srivastava 《International journal of urology》2007,14(6):558-560
Congenital thoracic ectopic kidney is a very rare developmental anomaly and the rarest form of all ectopic kidneys. It is usually asymptomatic and discovered incidentally on routine chest radiography. Herein we reported the first case of staghorn stone in a thoracic kidney managed successfully by percutaneous nephrolithotomy. 相似文献
10.